RFR 8192939: Remove Finalize methods from FileInputStream and FileOutputStream

[Iris Clark]

Hi, Roger.

> Webrev:
> http://cr.openjdk.java.net/~rriggs/webrev-io-finalize-8192939/index.html
> 
> CSR:
>   https://bugs.openjdk.java.net/browse/JDK-8212050

Your changes look good.

For the regression testing, do you need to add a "noreg" label to the bug or add the bugid to the "@bug" tag in the tests?

Thanks,
Iris